Combination mount and countershaft for watchmakers



y 22, 1951 w. B. MERKLEY 2,553,929

COMBINATION MOUNT AND COUNTERSHAET- FOR WATCHMAKERS 2 Sheets-Sheet 1Filed Feb. 17, 1947 amma W x May 22, 1951 w. B. MERKLEY COMBINATIONMOUNT AND COUNTERSHAFT FOR WA'ICl-IIJIAKEQRS 2 Sheets-Sheet 2 Filed Feb.17, 1947 jwvwmw m5. Me M26 Patented May 22,1951 W COMBINATIONMOUNT'JANDCOUNTER- e-sm'n non WA'IGHMAKERS "Woodrow BTMerklem-Price;Utah Application February 17, 1 947' 'SerialNo; 729,020

LGlaim. -1, This invention relates to a' -co1nbination= motor mount andcountershaft designed particularly for use on a watchmakers lathe.

It is an object of this invention to provide a mount which will providefor the integral mounting of a motor and countershaft on a lathe inorder to support the motor in close proximity to the lathe whereby thevibration of the assembly will be reduced to a working minimum value.

Another object of this invention is to provide a motor mount of the kindto be more specifically described hereinafter, so constructed andarranged that the motor and countershaft will be mounted on the lathe sothat the entire assembly may be pivoted about the pivot provided on thelathe, thereby increasing the effective range of pivotal movement of thelathe relative to the bench on which it is supported.

With the above and other objects in view, my invention consists in thearrangement, combination and details of construction disclosed in thedrawings and specification, and then more particularly pointed out inthe appended claim.

In the drawings,

Figure 1 is a front elevation of a combined motor mount and countershaftconstructed according to an embodiment of this invention,

Figure 2 is a side elevation,

Figure 3 is a vertical section taken on the line 3-3 of Figure 2,

Figure 4 is a vertical section taken on the line 4-4 of Figure 1,

Figure 5 is a top plan view, partly broken away and partly in section,of a motor mount with the countershaft and motor removed,

Figure 6 is a fragmentary detailed section taken on the line 66 ofFigure 3.

Referring to the drawings, the numeral l0 designates generally acombination motormount and countershaft for use particularly with awatchmakers lathe. Such lathes are usually constructed for pivotalmovement about one end thereof. Various means have been provided forrotating the driving shaft on the lathe, such means usually consistingof flexible cables from a countershaft or motor disposed below the latheand bench on which the lathe is supported.

The motor mount of this invention is adapted to be secured to the latheitself near or at the point of pivotal movement so that the motor anddriving means connecting the motor to the lathe will be pivoted togetherwith the lathe. In this manner the vibration of the lathe previouslycaused by the shaking of the lathe and the bench by the -motor anddriving -means-- suspended' 'be- "dowdt are done-away with and thewhole-"assemable fastening devices.

bly is formed as a compact unit.

The motor mount is adapted tobe made of metal or other suitablematerial. The motor mount l0 comprises a base portion l l which issubstantially fiat and rectangular, having a clamping member l2 formedon or fixed to the front end thereof. A part of the clamping member I2is formed on the base by providing the forward end of the base with asemi-circular cutout M at the front edge thereof, and the clamping jawl5 also having a correlated semicircular cutout IB, is adapted to besecured to the front end of the base by bolts H or other suit- Theclamping member I 2 is adapted to be clamped about a vertical pivotmember of the lathe.

The rear end of the bas H is formed with a laterally extending portionl8, the upper end of which is arcuate for receiving and supporting amotor 19 thereon. The section I8 is formed along its length with acentral groov 20 within which one end of a strap 2| is adapted toengage. The strap 2l is fixed at one end to the forward side of the baseextension l8 by a bolt 22, then the strap is encircled about the motor,having the other end 23 of the strap engaging in the slot 20. The end 23of the strap may also be slotted for adjusting the strap about themotor, and a bolt 24 through the slotted end of the strap secures thestrap and motor to the base section l8.

A countershaft 25 is supported above the motor l9 by an upwardlyextending arcuate arm 26. The arm 26 is preferably formed together withthe base II, and the motor I9 is adapted to be disposed on the forwardconcave side of the arm 26. The countershaft 25 is formed with anannular rib 21 intermediate the length thereof, which rib is slidablyengaged in an opening 28 across the upper end of the arcuate arm 26.

A short length of bearing, as 29, is disposed about the countershaft 25within the opening 28 of the arm, to provide a bushing or bearing forthe countershaft. The bearing 29 is secured in position by a set screwan engaging through the arm 26. The rib 21 is adapted to abut the innerend of the bearing 29 and a second bearing 3| is carried about thecountershaft within the opening 28 on the opposite side of the rib 21.

A set screw 30 secures the opposite bearing member 3| on the oppositeside of the rib 21, for holding the countershaft against lateralmovement'relativeto the arm 26.

Suitable pulleys are fixed on the countershai't outwardly of the arm 26on both sides thereof, and the pulleys 32 are fixed on the countershaftby set screws 34 which engage through the pulleys and the flat surfac 35on each end of the countershaft 25. Other pulleys as 36 are secured onthe drive shaft 31 of the motor l9, and a suitable flexible member notshown, will be used to connect the pulleys 32 to the pulleys 36 asselected, for driving the countershaft and pulleys from the motor.

The motor will drive the pulleys on one side of the arm 26 and thepulleys on the other side will be connected to the correlated pulleys-onthe lathe.

For lubricating the countershaft 25, I have provided holes 38 throughthe arm 26 and bearing 29, whereby suitable oil may be applied to theshaft 25 in the bearing 29.

I do not mean to confine myself to the exact details of constructionherein disclosed, but claim all variations falling within the purview ofthe appended claim.

What I claim is:

A combined motor and countershaft support comprising a base, a strapfixed at one end on said base for securing a motor on said base, saidstrap formed with a longitudinal slot on the other end, a bolt on saidbase engaging in said slot for adjustably fixing said strap about saidmotor, an upwardly extending arcuate arm onsaid base, and means securinga countershaft on said arm above said motor.

WOODROW B. MERKLEY.

' REFERENCES CITED The following references are of record in the

